Question: What is the bus system called in the city where Spectre was filmed after filming where the author of Cum nimis absurdum died?
Context: Document 1: Cum nimis absurdum: Cum nimis absurdum was a papal bull issued by Pope Paul IV dated 14 July 1555. It takes its name from its first words: "Since it is absurd and utterly inconvenient that the Jews, who through their own fault were condemned by God to eternal slavery..."
Document 2: Hippolito Salviani: Aristotle's work on fish species is one of the earliest known. In the 1500s fish enjoyed a renewed interest in both France and Italy. 1551 saw the appearance of Pierre Belon’s "Histoire naturelle des estranges poissons marins", illustrated by woodcuts. In 1554 Guillaume Rondelet’s "De piscibus marinis" was published, also using woodcuts. Salviani’s work was published in parts over a period of three years. Its use of copper engraving was well-suited to depicting fish, and greatly superior to woodcuts with its lifelike rendition of eyes and scales. The copper engravings have a scientific appearance, but some details, like the correct number and position of the scales were omitted. Nicolas Béatrizet probably designed the title-page and the fish illustrations were made by Antoine Lafréry. Another theory is that they were drawn by the Italian painter Bernardus Aretinus and engraved by Nicolas Béatrizet. Salviani's "Aquatilium animalium" only deals with animals personally observed and handled by him. He collected most of the fishes for his studies from the market in Rome.
Document 3: Spectre (2015 film): With filming completed in Rome, production moved to Mexico City in late March to shoot the film's opening sequence, with scenes to include the Day of the Dead festival filmed in and around the Zócalo and the Centro Histórico district. The planned scenes required the city square to be closed for filming a sequence involving a fight aboard a Messerschmitt-Bölkow-Blohm Bo 105 helicopter flown by stunt pilot Chuck Aaron, which called for modifications to be made to several buildings to prevent damage. This particular scene in Mexico required 1,500 extras, 10 giant skeletons and 250,000 paper flowers. Reports in the Mexican media added that the film's second unit would move to Palenque in the state of Chiapas, to film aerial manoeuvres considered too dangerous to shoot in an urban area.
Document 4: Mexico City: To clean up pollution, the federal and local governments implemented numerous plans including the constant monitoring and reporting of environmental conditions, such as ozone and nitrogen oxides. When the levels of these two pollutants reached critical levels, contingency actions were implemented which included closing factories, changing school hours, and extending the A day without a car program to two days of the week. The government also instituted industrial technology improvements, a strict biannual vehicle emission inspection and the reformulation of gasoline and diesel fuels. The introduction of Metrobús bus rapid transit and the Ecobici bike-sharing were among efforts to encourage alternate, greener forms of transportation.
Answer: Metrobús
Reasoning steps: Cum nimis absurdum >> author Answer: Paul IV
Paul IV >> place of death Answer: Rome
Where did Spectre filming take place after Rome ? Answer: Mexico City
What is the bus system called in Mexico City ? Answer: Metrobús